Founding year: the first Windsor post office (Blevins & Helbock, CC0).
History grade
What drives Windsor’s History grade
On its age, its old homes and the National Register, Windsor is more historic than 31% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C
HistoryA character grade: shown, never part of Windsor’s overall grade.
Few Illinois towns list much on the Register (a typical Illinois town has 0.5 per 10,000 residents, the U.S. 2.4), so Windsor’s 0.0 sits below most of its state (28% of Illinois towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to C+. The pre-1940 share is a Census survey estimate (±5.0 points). The founding year is the first post office, not a stated founding date.
Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Windsor’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
The road between Eton and Windsor, then marked by straggling cottages with gardens between them, with here and there a dwelling of a better kind, was thronged with herds of cattle and their drivers, for a fair was held that day in the town of Windsor, to which they were hastening. Then there were country maidens and youthful hinds in their holiday apparel, trooping towards the bridge. Booths were erected, near which in the Brocas
Text read by machine from the scan; it may contain errors.
barons, the valiant Prince Edward, his son, returning from a successful expedition into Wales, surprised the citizens of London, and carrying off their military chest, in which was much treasure, retired to Windsor Castle, and strongly garrisoned it. The queen Eleanor, his mother, would fain have joined him there, but she was driven back by the citizens at London Bridge, and compelled to take sanctuary in the palace of the Bishop of
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
By decade
No old photos in the archives yet
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
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The Windsor post office opened in 1856, the earliest record of the town by name (U.S. post office records).
How does Windsor rank for history?
Windsor is more historic than 31% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in Windsor?
12% of Windsor’s homes were built before 1940 (Census estimate, ±5.0 points), against a typical 11% for an Illinois town; the median home was built in 1971.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System, Sanborn fire insurance maps (Library of Congress) and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.